| RCB | Race Car Builders 
| Others |
| RCB | Radiation Control Bureau
| Others |
| RCB | Radio Crystal Blue
| Others |
| RCB | Raiffeisen Centro Bank
| Others |
| RCB | Rally Costa Brava
| Others |
| RCB | Ram Clube Brasil
| Others |
| RCB | Randomized Complete Block design
| Others |
| RCB | Range Control Building
| Others |
| RCB | Rapid Containment Baton
| Others |
| RCB | Raquettes Club de Ballan
| Others |
| RCB | Ravinder Chauhan Bhai
| Others |
| RCB | Reactor Containment Building
| Others |
| RCB | Readymix Concrete Bureau
| Others |
| RCB | Rear Crash Bar
| Others |
| RCB | Record Control Byte
| Others |
| RCB | Recovered Carbon Black
| Others |
| RCB | Recovering Cats Bangalore
| Others |
| RCB | Recursive Coordinate Bisection
| Others |
| RCB | Red Cambodian Blood
| Others |
| RCB | Red Carnation Ball
| Others |
| RCB | Red Cross Book
| Others |
| RCB | Redundant Cycle Base
| Others |
| RCB | Referral Commission Back
| Others |
| RCB | Regent Court Building
| Others |
| RCB | Regional Centre for Biotechnology
| Others |
| RCB | Regional Certifying Body
| Others |
| RCB | Registered Certification Body
| Others |
| RCB | Registry of Companies Businesses
| Others |
| RCB | Regular Commissions Board
| Others |
| RCB | Rehabilitation Counseling Bulletin
| Others |
| RCB | Reims Champagne Basket
| Others |
| RCB | Reinforced Concrete Box
| Others |
| RCB | Relationships Community and Boldness
| Others |
| RCB | Remote Circuit Breaker
| Others |
| RCB | Remote Control Bus
| Others |
| RCB | Renault Club Belgium
| Others |
| RCB | Renault Clube Brasil
| Others |
| RCB | Repairables Control Branch
| Others |
| RCB | Report Control Block
| Others |
| RCB | Representative Church Body
| Others |
| RCB | Research Capacity Building
| Others |
| RCB | Research Compliance and Biosafety
| Others |
| RCB | Research Contracts Branch
| Others |
| RCB | Residential College
| Others |
| RCB | Residential College Board
| Others |
| RCB | Residual Cancer Burden
| Others |
| RCB | Residual Circuit Breaker
| Others |
| RCB | Residual Current Breaker
| Others |
| RCB | Resource-Centred Budget
| Others |
| RCB | Respiratory Care Board
| Others |
| RCB | Respiratory Care Board of California
| Others |
| RCB | Resurrection Church Beirut
| Others |
| RCB | Reverse Code Book
| Others |
| RCB | Reverse Convertible Bond
| Others |
| RCB | Revolution Coffee Bar
| Others |
| RCB | Richards Bay Airport
| Others |
| RCB | Richards Bay Airport, Richards Bay, South Africa
| Others |
| RCB | Richmond Community Bands
| Others |
| RCB | Right Center Back
| Others |
| RCB | Right CornerBack
| Others |
| RCB | Rigid Core Board
| Others |
| RCB | Ringing Control Block
| Others |
| RCB | River City Beemers
| Others |
| RCB | River City Bicycles
| Others |
| RCB | Riverine Combat Boat
| Others |
| RCB | Riverine Command Boat
| Others |
| RCB | Riverine Command Boats
| Others |
| RCB | Riverstone Corner Bistro
| Others |
| RCB | Robert C Byrd
| Others |
| RCB | Robert C. Byrd
| Others |
| RCB | Robert Couse Baker
| Others |
| RCB | Robinson College of Business
| Others |
| RCB | Rogue Cavaliers Brigade
| Others |
| RCB | Romanian Convention Bureau
| Others |
| RCB | Ronald C Bauer
| Others |
| RCB | Ronnie Charlie and Brian
| Others |
| RCB | Roswell Computer Books
| Others |
| RCB | Rotary Corer Barrel
| Others |
| RCB | Rotated Checker Board
| Others |
| RCB | Rothschild Cie Banque
| Others |
| RCB | Royal Challengers Bangalore
| Others |
| RCB | Royal Council of Britannia
| Others |
| RCB | Royal Custom Builders
| Others |
| RCB | Ruby Coach Builders
| Others |
| RCB | Rural California Broadcasting
| Others |
| RCB | [American] Red Cross Bulletin
| Others |